EFR32MG21B010F768IM32-BR

Overview

The EFR32MG21B010F768IM32-BR is a Mighty Gecko RF System-on-Chip featuring an ARM Cortex-M33 core operating at 80 MHz. It integrates 768 kB of flash memory and 64 kB of RAM within a QFN-32 package. The device supports 2.4 GHz wireless communication with a maximum data rate of 2 Mbps, delivering 10 dBm output power and -94.4 dBm sensitivity. It operates on a supply voltage ranging from 1.71 V to 3.8 V, consuming 8.8 mA during reception and 33.8 mA during transmission.

Feature Summary

• Supports multiprotocol mesh networking including Zigbee, Thread, and Bluetooth Low Energy.
• Integrates Secure Vault technology for hardware-based security and physical unclonable functions.
• Includes rich analog and digital peripherals such as a 12-bit ADC and multiple serial interfaces.

Applications

• Zigbee and Thread mesh network nodes
• Bluetooth Low Energy smart devices
• Smart metering systems
• IoT gateways and voice assistants

Procurement Notes

Verify the specific suffix BR indicates reel packaging when sourcing. Confirm that the B010 variant corresponds to the 10 dBm power class rather than higher output options. Ensure compatibility with required firmware libraries for multiprotocol stack implementation. Check regional availability as distribution may vary by region.

Selection Notes

Choose this model for applications requiring moderate memory capacity alongside robust 2.4 GHz connectivity. The 768 kB flash suits complex mesh protocols without excessive size. Consider the QFN-32 form factor for compact designs. Verify thermal requirements given the wide operating temperature range up to 125 C.

Part Context

This component belongs to the Silicon Labs EFR32MG21 series, designed for line-powered IoT devices. It offers optimized performance for Zigbee, Thread, and Bluetooth applications. The series emphasizes low active current consumption and high RF link reliability for stable mesh networks.

Replacement Considerations

EFR32MG21B010F1024IM32-BR provides increased memory capacity while maintaining identical RF and interface specifications.